Blast-furnace.



L. N. MGGARTER.

BLAST FURNACE. APPLICATION mum 1017.26.1'1566.

Patented June 6,1911.

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L. N. MQCARTER.

BLAST FURNACE.

APPLICATION rum) 11017.26, 190s.

Patented June 6, 1911.

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BLAST FURNACE.

LPPLIOATION rum) NOV.26,1906.

Patented June 6, 1911'.

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UNITED STATES PATENT o EToE.

LOUI MCCARTER, OF NORRISTOWN, PENNSYLVANIA, l$SIGrNOR OF ONE-FOURTH TO JOHN D. NEW'IBOLD, OF NORB'ISTOWN, PENNSYLVANIA.

,glBLAST -YURNACE.

: scribed.

In the accompanying drawings: igure 1, is a vertical sectional view of part ot a blast furnace illustrating my invention;

Fig. 2, is a vertical sectional view on the line 2-2, Fig. 1; Fig. 3, is a. sectional plan view on the line 3-3, Fig. 1; Fig. 4, is a diagram view illustrating the tracks of the skip hoist; Fig. 5, is a side view of one of the cars; Fig. 6, is a sectional view on the line 66, Fig. 5, and Fi 7, is a modification of the arrangement 0 the tracks.

In feeding blast furnaces it is ditlicult. to properly distribute the material evenly over the surface "(if the material already in the furnaces, and very costly and intricate mechanism has been designed for this purpose which has not been successful.

By my invention I am enabled to discharge the material from the car over the center of the hopper so that the ma erial 'will be distributed evenly into the hopper itself before being discharged into the fainace. By this means I am enabled to distribute the material over the surface of the material in the furnace in even layers so as to insure the best possible action of the furnace.

Referring to the drawings A is the body of the blast furnace, having a super-structure B which may be any of the well-known types. In the present instance, the superstructure has three ho pers C, D and E:

Inclosing the bottom 0 the hopper O is a bell valve 0, and inclosing the hopper D is a bell valve (3. These valves are suspended from rods 0 and (2" respectively, and the rods are connected to levers G and D, pivoted at c and d respectively, and actuated by any suitable means. In the present instance, steam mechanism is shown to operate the valves. The rod 0? is attached to a cross head d which extends through slots in the sides of the hopper E. The cross head is at- Specification of Letters Patent. Application filed November 26, 1906. Serial no. 345,110.

Phtented June 6, 1911.

taehed to the lever D by links d. The rod 0 passes through the hollow rod d and is attached at its upper end to a cross head 0 also extending through slots in the s de walls of the hopper E and attached to links a connected to, the levers C; the cross head 0 has a deflector c for deflecting theinaterial as it passes into the hopper E.

G is a slip hoist extending fron the bins at the base of the r'urnace. to a; -point above the hopper E,

gg are two tracks separated on the lower portionofthe hoist so that one car H can pass another but merging into a-'single track on the upper portion, so that a car traveling upward on either track can be shifted onto the single track and discharged centrally In the construction shown'iifi'Fig. 1 of the Lnto the hopper E.

rawings, the rails or! the upper portion of .the tracks of the skip hoist are bent-'oht of line so as to form an inclined sectioh g and a vertical section g and in ordergto insure the proper transfer of the car directly over the center of the hopper, I provide a guard rail J which is so shaped as to hold the wheels of the cars onto the main rails. The hoisting rope n passes around the ordi nary drum N and is connected by a yoke n to the body of the car. In the present instance the. pivot connect on n of the yoke with the car is off centerv as shown ih Fig. 5,

so that the upper end of the car will slightly overbalance the lower end. This will insure the car traveling on the rails. When the car reaches the portion 9* of the track it will swing and keep to its track until it reaches the position shown in Fig. 1, and at the same time, owing to the sition of the pivot ,*the car will tend to cop to the rail when it is being lowered after'being disframework of the structure B and is soon I as the latches are acted upon the doc will open, discharge the load, and the 00 here weights will close the doors again and as soon as the car begins to descendthe catches will be released and engage the doors, preventing'them swinging as the car descends. The action of the air will tend to close the doors as soon as the ear commences to descend, as the cars of the ski p hoistai'e operated very quickly and travel rapidly.

The operation of the apparatus is as follows:- rial and elevated to position, while the other car is being lowered to receive a load. As the car nears the top it veers from the direct line of pull of the rope and travels on the inclined portion of the track until it reaches the vertical section 57 and then turns so as to be directly on end and above the center of the hopper. Then by a slight. movement. upward of the car the spring catches b are released by coming in contact with the inclined plates o on the superstructure B, releasing the doors of the car and allowing the material to fall directly into the hopper E. The material will then pass from this hopper into the hopper I) and onto 'the valve rl being distributed evenly on this valve. Then on opening the valve (1, the material drops into the lower hopper G onto the valve 0, and then after sutlicient; material accumulates in the hopper C the valve is opened so as to allow the material to be discharged into the. body or" the blast furnace distributing itself over the surface of the material already in the furnace. The car in the meantime is lowered, the first movement being to release the catches which engage the doors which were closed as soon as tho-contents of l'l](.(ttl was discharged and the car will then travel down the skip hoist while a loaded car is being elevated to the point of discharge.

l have shown in Fig. t the two tracks on the lower portion of the ship hoist. connected to a single track atthe uppcncnd. .Tn this instance l use a grooved whcel'on each car to travel on the outside rail,'as shown in said figure, to dispense with switches; thus one car travels only on one of the lower tracks being shifted onto the single track-and rctnrningmver the same double track.

It will bc understood that the tracks may be arranged as in Fig. 7, in which two soparalc tracks are used, one overlapping the other andlhe rails of one track forming the guards for the other track. In this con strnction, special grr'rovcd whccls are not.

necessary.

in some instances the hopper I) may hedispcnscd with and the carswill thcn discharge directly into the hopper l but l One of the cars is loaded with mate-- prefer the construction shown, as I break the fall of the material and insure its even distribution.

I claim:-

1. The combination in a blast furnace, of 6 a hopper, a valve therein, a. skip hoist lead ing from a pointnear the base of the blast furnace to a point; above the hopper, a. track on the skip hoist deflected at its upper end to extend over the center of the hopper, a

. car arranged to travel on the track, the rear end of the car being open for the discharge of material and provided with a door for closing the discharge opening, the track be- I mg so formed that when the car reaches a t point. directly over the center of the hopl per it will be turned into-a vertical position with the discharge end lowermost, so that- :vhen the door is opened the material will be discharged into the center of the hopper.

2. The combination in a blast furnace of a bod y portion, a hopper above the body portion, a valve mounted in the hopper, a cross bar connected to the valve, two pivoted arms connected to the cross bar outside of 5 the hopper and above its upperend, means for operating the arms, an inclined skip hoist deflected so as to extend over the hopper between the said arms, and a car on the skip hoist, the track on the skip hoist extending to a point directly above the hopper and between the pivoted arms, so that,- the car will discharge its load centrally into the hopper.

3. The combination in a blast furnace, of

a hopper. tracks leading to a point above the hopper and turned upward. a car arranged to travel on said tracks, and a yoke pivoted tolhe carat one side of the ccnlcr so that the upper end ot' the car will over-balance the lower cud.

l -t. The combination in a blast furnace, of a hopper, tracks extending over the hopper and turned lrpward, a car arranged to trav l on said tracks and ha ring a door at one end 10 to close the discharge opening, a yoke. pivqrtctl' at. cach side of the car on one side of the ccntcr the parts being so arranged that, whrn the rar is raised to its full extent; it. will he turned on end and the discharge opening will he dircctly above the ccntcr oitbc hoppcl'.

In testimony whereof I have signed my nannto this s a-cilication. in the presence of two sub cribing witnesses.

i .LOUIS l .\l'o(.'\ R'llllt.

Witnesses:

\V||.|. A. BARR,- Jos. ll. Kama. 

